Spectacles.



F. C. A. RICHARDSON.

SPECTACLES. APPLICATION FILED sEPTlzs. 191s.

2 SHEETS-SHEET l.

Mmm/Ey Patented July 17, 1917.

F. C. A. RICHARDSON.

SPECTACLES.

APPLICATION FILED SEPLZS. uns,

Pilllltd July 17, 1917.

2 SHEETS-SHEET 2 www@ Fm C. RICELARJDSON, F NEW YORK, vZbl'.

srncrnenns. j

To all whom t may concern.'

Be it known that FRANK C. A. RICHARD- soN, a citizen of the United States, and resident of the city, county, and State of New York, has invented certain new and useful Improvements inl Spectacles, of which the following is a specification.

This invention relates to spectacles,having more particular reference to spectacles dew signed to protect the eyes from strong rays of light.

. The invention has for an object to provide an improved spectacle for this purpose in which the desired protection for the eye is M obtained by obscuring or shutting olf the -non-elective light rays.

For further comprehension lof the invention and of the objects and advantages thereof reference Will be had to the following dem scription, taken in connection with the accompanying drawings, the various novel fea tures of the invention being more particularly pointed out in the appended claims.v Figure 1 of the drawings is a rear or inm terior face view of a pair of spectacles embodying the invention.

Fig. 2lis. a transverse section on the line 2 2 of Fig. l.

Figs. 3 and 4 are horizontal sectional'views y@ taken respectively on the lines 3 3 and 4 4 of Fig. 1 and looking in opposite directions, as indicated.

Fig. 5 is a similar -view to Fi 1, showing l, a modied embodiment of the mvention. 'an Fig. 6 is a similar view to Fig.1, showing another modiiication.

Fig. 7 is a detail cross section on the line '6-6 of Fig. 6 showing only the screen.

. Fig. 8 isa similar'view to Fig. 1, of a 'an vhlrther modication. f

Fig. 9 is a detail cross section on the line 92E-9 of Fig. 8 and showing only the screen. The frame or mounting for the spectacle may be of any desired type or construction, 'at that herein shown comprising the rims 2,

bridge 3 and bows 4.

Accordin to m invention, screens 5,

made of lig t. resisting or obstructingmate.- A

rial, preferably of o aque material such, for

5e instance, as eelluloid), hard rubber or metal take the place of the usual lenses. The rear yor inner surfaces of the screens, which are the surfaces adjacent the eyes, indicated at 6 in the drawings, are of dark color, pref- 55 erably black, and have a dull finish to render them light absorbing and non-reecting.

pectfleation of Letters Patent.

application nea september as, 191e. serian no. raam.

'modification adapted to permit both of vertical adjustment of the slots and of adjuststriking the eye through Patented July 1F, 1916'.

Formed in each screen midway between its upper and lower edge is a narrow horizontally disposed, rectilinear slot These slots may be made adjustable in width, as shown 1n Figs. 1 to 4, by providing slides 8 whlch are mounted, one on each screen, onV the rear face thereofand are adjustably held thereon by frictional contact with the extremitlesv of tongues 9j struck out ofthe screens and extending -overthe'side edges of the slides, the ytongues 9 also serving as guidesA for the slides 8. f

In Fig. 5 l have shown'a modiied form of the invention inwhich the slides are dis 70 pensed with and which may be preferred lnlsome cases, 'as for instance, when the slots 7 1n thescreens 5 are constructed to suit an individual purchaser, in which case no adjustment of the slots might be desired.

In Figs. 6 and 7 l have shown another modification which provides for vertical ad'- justment of the slots.

In this modification the screens 5 are formed with comparatively wide horizontal slots or openings 16 partially ,covered by slides 17 in which are formed the sight slots 18, the slides being held vin position by tongues 19 struck up from the screen.

With this arrangement the position of the slots may be adjusted vertically with regard to the frame of the spectacles to bring the slots into the desired position with respect to the eyes of the, wearer. Also the slots may be varied in width by moving the slides so as to bring the slots adjacent the upper or lower edges of the openings 16.

lln Figs. 8 and 9 I have shown a further` ment of the width of the slots.

lin this modification the screens are also formed with comparativel wide horizontall slots oropenings 21 wh e the sight slots 22 are formed between co-acting slides 23 and 2li held in place by ytongues 25 as in the previously described 'modifications With this construction any desired adjustment both of the width and vertical position of the sight slots, within the limits defined by lthe openings 21, may be obtained. llt will be apparent that within the range permitted by `the slots the vision of. the` wearer will not be in any Way obscured `by these spectacles while the uantity oflight e slots is very thereof in any posltion small and adequateA roteotion from strong llight such as sunlig t, snow glare or the like is aorded. Also vthe particular horizontal, rectilinear disposition of the slots gives the wearer a normal lateral range of vision, while by reason of the fact that the normal tendency Ais to confine attention to objects vwithin a limited vertical range the vision of the wearer is to all intents and purposes of normal range.

The adjustability of the.y slots permits of the manufacture of the screens in quantities and enables each purchaser to adjust the slots to his individual requirements and also for different uses. y

It has been found that the use of these spectacles'when observing moving pictures Areduces the flic-ker and resultant eye strain in for the passage of light to the eye, and a slide of similar material adjustably mounted on said screen to have rectilinear movement and adapted to vary the width of the said slot evenly throughout the length of said slot.

2. A screen for spectacles formed of opaque material having a slot formed there- I in for the passage of light to the eye, a slide of similar material for varying the Width of the slot, and tongues formed integrally from said screen and engaging said slide to hold and guide the latter.

3. A screen for spectacles formed of light resisting material having a relatively wide horizontally disposed rectilinear slot formed therein, and a pair of slide members mounted on said screen and adjustable toward and away from one another, said slide members being adapted to partially cover the said relatively wide slot and provide between them a relatively narrow slot.

Signed at the city, county and State of New York, this 15th day of September, 1916.

FRANK C. A. RICHARDSON. 

